[Makefile]fix name of sw file 2

modules/Makefile

@@ -226,7 +226,7 @@ FW_NAME = BT_6703xx
 endif
 
 ifeq ($(HARDWARE), bt6703_rt)
-FW_NAME = BT_6703_RTхх
+FW_NAME = BT_6703_RTxx
 endif
 
 ifeq ($(HARDWARE), bt6707)
@@ -250,7 +250,7 @@ FW_NAME = BT_6711xx
 endif
 
 ifeq ($(HARDWARE), bt6711_v1)
-FW_NAME = BT_6711_v1хх
+FW_NAME = BT_6711_v1xx
 endif
 
 -include ../Makefile.inc.stm32